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Freewheel threading is pretty universal. You can put any freewheel which is appropriate for your drivetrain on those wheels.

Regardless of whether you choose Campag or Shimano, stick with gear designed for one system, and as much as possible one gear number. (8 speed, 9speed, etc...)

For instance, if you use an 8 speed Campag freewheel, use 8 speed Campag shifters, chain, derailleurs, and either an 8 or 9 speed Campag crank set. You will need the appropriate bottom bracket to match your crankset.

It is possible to mix and match a bit, mostly the chain could be either Shimano or Campag without major issues. But best to stick with one system, especially if you don't understand the compatibility changes you're making.

By the way, those wheels are tubulars. That is, glue on tires. Were you aware of that?

Yeah, I know about them being tubular, many thanks for your help.
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MChandlerMar 26 '12 at 11:00

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Freewheel threading is universal, but the axle length and dishing determine what freewheels the wheel will be compatible with. (Though a known "8" will generally be compatible with all "8s".)
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Daniel R HicksMar 26 '12 at 11:10

As you say. But dishing and axle length differences will indicate design for a different number of gears, so an 8 speed freewheel is an 8 speed freewheel.
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zenbike♦Mar 26 '12 at 12:51

@Mac: A Shimano 9 speed chain will work better on Campag 10 speed than a Shimano 10 speed does because it's wider than the Campag 10 speed by .5mm, and the Shimano 10 speed is narrower by .3mm, so it doesn't rest properly on the chain ring teeth. However, it's always better to stick with components that were designed to work together. More info on chain width and compatibility here: sutherlandsbicycle.com/Chapter5.pdf
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zenbike♦Mar 27 '12 at 1:56